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Ecological Regions: Level 1 Regions

North AmericaPhysical Environment

Extent of the Level I Ecological Regions of North America

EPA

A map of North America shows various ecological regions, each marked with a distinct color to represent different Level 1 ecological regions.

Arctic Cordillera (Red): Found in the northernmost parts of Canada, specifically the Arctic Archipelago.

Tundra (Blue): Covers large portions of northern Canada, including parts of Nunavut and the Northwest Territories, as well as coastal areas of Alaska.

Taiga (Purple): Spans across central and northern Canada, covering parts of Quebec, Ontario, Manitoba, Saskatchewan, Alberta, and British Columbia.

Hudson Plain (Orange): Located in the northeastern part of Canada, around the Hudson Bay area.

Boreal Forests (Yellow): Encompasses large areas in Canada, south of the tundra and taiga regions, and extends into parts of Newfoundland and Labrador.

Northwestern Forested Mountains (Green): Found along the western coast of Canada and the United States, covering parts of British Columbia and Alaska.

Marine West Coast Forest (Brown): Occupies the coastal regions of the Pacific Northwest, including areas in British Columbia, Washington, Oregon, and northern California.

Eastern Temperate Forests (Pink): Stretch from the Great Lakes region through the northeastern United States and into eastern Canada.

Great Plains (Grey): Span the central United States from Canada to Texas, including parts of Alberta, Saskatchewan, Manitoba, and several central U.S. states.

Deserts and Steppes (Dark Green): Found in the southwestern United States and northern Mexico, covering areas in Arizona, New Mexico, and parts of California and Nevada.

Mediterranean California (Dark Pink): Specific to the coastal regions of central and southern California.

Southern Semi-Arid Highlands (Gold): Located in central Mexico and parts of the southwestern United States.

Temperate Sierras (Dark Brown): Found in Mexico, primarily in the Sierra Madre ranges.

Tropical Dry Forests (Light Brown): Present in parts of southern Mexico and Central America.

Tropical Wet Forests (Light Tan): Located in the southeastern part of Mexico and Central America, including the Yucatan Peninsula.

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Ecological Regions: Level 1 Regions

Arctic Cordillera

Tundra

Taiga

Hudson Plain

Boreal forests

Northwestern forested mountains

Marine west coast forest

Eastern temperate forests

Great Plains

Deserts and steppes

Mediterranean California

Southern semi-arid highlands

Temperate sierras

Tropical wet forests

Alaska
25.1%6.23%14.3%3.61%
Arizona
66.3%12.9%19.7%
Utah
19.3%80.3%
Yukon
7.08%38.7%53.4%
Northwest Territories
3.04%63.7%
District of Columbia
100%
Florida
84.3%14.5%
Idaho
57.3%40.7%
New Hampshire
82.5%17.5%
Rhode Island
92.1%
Vermont
86.9%13.1%
Washington
44.1%18.2%34.8%
Wyoming
6.11%27.1%46.4%
Nunavut
1.96%1.52%3.41%
Montana
31.6%66.0%
Maine
44.1%52.2%
North Dakota
100%
Kentucky
100%
Nova Scotia
17.5%6.61%
Virginia
99.4%
Delaware
98.4%
Prince Edward Island
89.2%
Saskatchewan
8.06%57.8%33.4%
Mississippi
99.9%
West Virginia
100%
Nebraska
100%
Texas
17.3%4.05%13.1%
Missouri
60.6%39.4%
Louisiana
86.4%12.6%
North Carolina
99.2%
Oregon
53.3%14.9%7.11%
New Brunswick
3.19%95.8%
Alabama
99.9%
New Mexico
8.59%32.9%7.36%1.32%3.54%
Kansas
99.9%
Wisconsin
31.7%66.5%1.10%
British Columbia
7.72%4.25%60.9%6.59%4.95%
Newfoundland and Labrador
5.23%56.9%22.4%
New Jersey
11.2%86.6%
South Carolina
99.7%
Michigan
25.2%1.08%
Alberta
17.4%54.4%6.61%21.1%
Connecticut
15.9%84.0%
Pennsylvania
3.06%79.4%
Colorado
38.2%42.1%2.98%
Nevada
99.6%
Massachusetts
32.4%63.3%
Georgia
99.9%
New York
19.7%1.05%
Maryland
97.9%
Québec
1.01%37.0%2.25%3.73%1.51%
Manitoba
22.1%11.3%55.4%10.0%
Oklahoma
21.6%78.4%
Tennessee
100%
Ontario
28.1%64.1%7.08%
California
26.9%2.89%29.8%39.7%
Arkansas
100%
South Dakota
3.94%96.1%
Ohio
99.9%
Indiana
100%
Minnesota
40.6%24.1%35.2%
Iowa
6.36%93.6%
Illinois
99.9%
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